On Mon, 2 Dec 2013, Joonsoo Kim wrote: > To prepare to implement byte sized index for managing the freelist > of a slab, we should restrict the number of objects in a slab to be less > or equal to 256, since byte only represent 256 different values. > Setting the size of object to value equal or more than newly introduced > SLAB_OBJ_MIN_SIZE ensures that the number of objects in a slab is less or > equal to 256 for a slab with 1 page. > > If page size is rather larger than 4096, above assumption would be wrong. > In this case, we would fall back on 2 bytes sized index. > > If minimum size of kmalloc is less than 16, we use it as minimum object > size and give up this optimization. > > Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx> Acked-by: David Rientjes <rientjes@xxxxxxxxxx> -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>